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Heaters Flexible in Design and Application to Fit Your Specific Needs

Kapton*, Silicone-Rubber-Insulated, and Fiberglass-Woven Heaters

Chromalox offers a selection of flexible heat- ers in a variety of shapes, sizes, and materials to apply direct and efficient heat to most any contour without sacrificing dependability. Holes and slots can be incorporated for posi- tioning on complex surfaces. Their thin profile and direct application to a surface provide fast, efficient heat transfer, requiring less power than traditional methods. In addition to standard models, our flexible heaters can be customized to your particular requirements. Call on Chromalox engineering support for assistance to achieve a custom solution.

Chromalox Flexible Heaters Are Suited for Applications in a Wide Variety of Industries

• Medical

• Semiconductor

• Power Systems/Motors

• Communications

• Food Service

• Laminating/Forming

• Chromatography

• Printing/Copying

• Vending

• Transportation

• Avionics & Aerospace

• Manufacturing

• Military

• Tank/Vessel Heating

• Analytical Instruments

• Electronics

*Kapton is the registered trademark of E. I. Du Pont De Nemours and Company.

2

Kapton* is a polyimide fi lm that hashigh dielectric strength (1,000 Vac),allowing for very thin heater construc-tion. It encapsulates etched-foil heatingelements bonded with FEP or acrylicadhesive. The result is a heater thatis not only remarkably thin−in general,about 0.007 in. (0.18 mm)−resulting in fast thermal transfer, but also exhibitssuperior dimensional stability, light weight, and fl exibility with bends astight as 0.032 in. (0.81 mm). All togetherthis makes them ideal for putting heateffi ciently and effectively exactly whereyou need it in applications with tight space and weight limitations, and even controlled heat profi les.

Kapton heaters are rugged and durable. They resist most oils and chemicals, including solvents and acids, and theycan withstand radiation up to 10^6 rads.

A Unique Combination of Properties for Critical Applications

The ability to deliver precision heat distribution with ultra-thin, lightweight, fl exible construction makes Kapton heaters ideal for applications that are not suitable for other fl exible heaters.

Medical• Life support devices• Sterilizers, autoclaves• Surgical instruments• Blood analyzers• Sleep apnea equipment• Dialysis machines• Incubators

Analytical Instruments• Diagnostic instruments• DNA analyzers• Tissue processors• Chromatographs

Semiconductor Wafer Processing• Processing baths• Chucks

Aerospace, Avionics• Instrumentation• Devices

Electronics• Photocopiers• Flat panel displays• Semicon vacuum• Computers

Chromalox Kapton heaters are avail-able in a variety of shapes, sizes, and wattages. Contact your Chromalox representative for assistance.

Kapton* Heaters

Features of Kapton Heaters

• Voltages: 24, 28, 115, and240 standard

• Watt densities:

3 2.5 W/in.² (0.4 W/cm²), slow warming

3 5.0 W/ in.² (0.8 W/cm²), general-purpose heating

3 10 W/in.² (1.6 W/cm²), quick warming and high temperature range

• Temperature range: -328° to 392°F (-200° to 200°C)

• Minimum bend radius: 0.032 in. (0.81 mm)

• Resistance tolerances: ±10%

• Overall thickness: 0.007 in. (0.18 mm), except at lead exit

• Dielectric strength: 1,000 Vac

• Power design features: distributed wattage, dual voltage, zoning, 3-phase

• Sizes up to 12 x 18 in. (305 x 457 mm)

Thin-Profi le Heaters with Superior Dimensional Stability and Flexibility

*Kapton is the registered trademark of E. I. Du Pont De Nemours and Company.

3

Chromalox SL-N General-Purpose Silicone-Rubber-Insulated Flexible Heaters

Chromalox SL silicone-rubber-insulated heating elements are wire or etched- foil heating circuits sandwiched be- tween layers of fiberglass-reinforced silicone rubber insulating material, pro- viding flexibility and strength. They are capable of flexing and will conform to contoured surfaces. They can also be preformed to complex shapes and can be supplied with distributed wat-tages and multiple heating circuits.

Ruggedness, dimensional stability, flexibility, and superior weatherability are all characteristics of reinforced silicone-rubber heaters.

Standard SL-N General-Purpose Models Chromalox standard SL-N general-purpose heaters are pre-designed and available in a wide array of sizes and ratings. Some models are stocked and can be shipped within 24 hours from receipt of order. All standard SL-N general-purpose heaters are supplied with 10-in. (254-mm) silicone- insulated leads. Stocked items can be modified to include pressure-sen- sitive adhesive for mounting but require additional lead time.

To order, consult the ordering informa- tion table on page 5, specifying model number, PCN, and quantity. Stocked items ship within 24 hours from receipt of order.

Features of SL-N General-Purpose Silicone-Rubber-Insulated Heaters

• Standard pre-designed sizes and ratings in stock

• Made-to-order designs and ratings available

• Square, rectangular, round, and custom shapes

• Standard 1 in. (254 mm) square to 12 in. W x 48 in. L (305 mm W x 1,220 mm L) in 120 V

• Custom sizes up to 36 in. W x 120 in. L (914 mm W x 3.048 mm L) up to 600 V

• Thickness range from 0.030 to 0.060 in. (0.762 to 1.524 mm)

• Silicone rubber material temperature range: -80° to +390°F (-18° to +200°C)

• Silicone-rubber material is UL recognized for watt densities of:

3 5 W/in.² (0.78 W/cm²) in open air

3 10 W/in.² (1.55 W/cm²) attached with factory-supplied PSA

3 15 W/in.² (2.33 W/cm²) vulcanized to metal part

• Up to 40 W/in.² (6.20 W/cm²) pos- sible with proper temperature control

• Distributed wattage requirements can be met by design

• Standard resistance tolerance: -10%, +5%

• Chemical and moisture resistant

• Choice of mounting methods, temper- ature controls, termination styles, and grounding options available

For the Greatest Flexibility in Meeting Your Application Requirements

4

Custom SL-N General-Purpose ModelsWhen a standard silicone-rubber-insu- lated flexible heater will not satisfy the exact requirements of your application, custom SL-N general-purpose heaters can be made to order to exact electrical and dimensional specifications.

Beyond having the same silicone rubber material temperature range, thickness range, and resistance tolerance of stan- dard SL-N general-purpose heaters, custom SL-N general-purpose heaters are available in custom shapes up to 600 volts. They can be made of a single piece up to 36 in. (915 mm) wide by 120 in. (3,050 mm) long.

A variety of mounting methods, temp- erature control, and termination options is available. There are also options for grounding and a choice of integral insulation. A description of the available options is provided on pages 6 thru 8.

To order, consult the ordering inform-ation on the facing page. Or consult your Chromalox representative.

Standard SL-N Heater Specification and Ordering Information

Watts Volts

Dimensions

Model No. PCNWidth in. (mm)

Length in. (mm)

2050

100150200

120120120120120

2 (528)2 (528)2 (528)2 (528)2 (528)

2 (528)5 (1,270)

10 (2,540)15 (3,810)20 (5,080)

SL-N-2-2-O-10-120V-20WSL-N-2-5-O-10-120V-50WSL-N-2-10-O-10-120V-100WSL-N-2-15-O-10-120V-150WSL-N-2-20-O-10-120V-200W

121611121620121638121646121654

200 240 2 (528) 20 (5,080) SL-N-2-20-O-10-240V-200W 121662

75150225300300375600

120120120120240120120

3 (762)3 (762)3 (762)3 (762)3 (762)3 (762)3 (762)

5 (1,270)10 (2,540)15 (3,810)20 (5.080)20 (5,080)25 (6,350)40 (10,160)

SL-N-3-5-O-10-120V-75WSL-N-3-10-O-10-120V-150WSL-N-3-15-O-10-120V-225WSL-N-3-20-O-10-120V-300WSL-N-3-20-O-10-240V-300WSL-N-3-25-O-10-120V-375WSL-N-3-40-O-10-120V-600W

121726121734121742121769121777121785121814

200250375500

120120120120

4 (1,016)5 (1,270)5 (1,270)5 (1,270)

10 (2,540)10 (2,540)15 (3,810)20 (5,080)

SL-N-4-10-O-10-120V-200WSL-N-5-10-O-10-120V-250WSL-N-5-15-O-10-120V-375WSL-N-5-20-O-10-120V-500W

121822121849121857121865

450600

120120

6 (1,524)6 (1,524)

15 (3,810)20 (5,080)

SL-N-6-15-O-10-120V-450WSL-N-6-20-O-10-120V-600W

121873121881

NOTE: All supplied with 10-in. (2,540-mm) leads.

5

SL-N Flexible Heaters Custom Ordering Information

Model Flexible Heating Elements

SL-N General-Purpose Heater

Code Special Mounting Features

N None V Velcro*A Adhesive (PSA) S SpringB Vulcanized SC Spring ClaspF Foil Backing H HooksI Insulation C PreformedE Eyelets/Mounting Holes

Code Physical Dimensions (in.)

xx.xx Smallest Dimensions (for circular-shaped heaters use designator “xx” only)xx.xx Largest Dimensions (for circular-shaped heaters, add “OD” to the indicated outside

diameter, e.g., 8.25OD

Code Control Options

O NoneP Preset Thermostat (specify temperature, e.g., 300°F max.)A Adjustable Thermostat (range 70°-140°F, 70°-190°F, or 70°-425°F)J Type J ThermocoupleK Type K ThermocoupleR RTD (specify rating)D TFD (specify rating)TF Thermal fuse (specify high limit)T Thermistor (specify rating)

Code Lead Length

xx Lead Length, in. (10 in. Standard)Power Cord Length, ft (6 ft Standard)

Code Lead Type

Silicone-Rubber-Insulated LeadsT Teflon* Insulated leadsCGM Power Cord without Plug, with Mesh GridCPGM Power Cord with Plug, with Mesh GridCG Power Cord with Integral Grounding, without PlugCPG Power Cord with Integral Grounding, with Plug

Code Electrical Specifications

V VoltageW Wattage

Single-Phase Is Standard; Use “3P” for Three-Phase

SL- SL-

N AI

5 25

25 25

0 40P/120P

10 6CPG

120V 480V

100W 400W

Typical Model Number Typical Model Number

Technical Notes:

1. Cutouts, notches, etc. must be indicated with accompanying detail drawings to show angle of curvature.

2. If adding abrasion protection, add designator: “F” for silicone rubber coated fiberglass sleeving; “A” for armor braiding.

3. Consult your local Chromalox Sales Office for recommended grounding methods.

6

Following are the various options available for customizing Chromalox SL-N silicone-rubber-insulated fl exible heaters to your exact requirements. Use this information for working with the ordering guidelines on page 5 or to assist you in consulting with your Chromalox representative.

Mounting MethodsChromalox provides the best and most economical mounting method for your application.

Pressure Sensitive Adhesive (PSA)Silicone, silicone/acrylic, or acrylic pressure-sensitive adhesive tape canbe factory bonded to your heating element to provide a strong bond toany clean, smooth surface. Chromaloxuses a specially manufactured silicone

Options for Customizing Chromalox SL-N Silicone-Rubber-Insulated Flexible Heaters

based PSA that allows for our silicone-rubber heaters to be mounted even on curved surfaces. Simply peel awaythe protective backing and roll the heaters into place.

Field-Applied RTV AdhesivesRoom-temperature vulcanizing (RTV) adhesives can be used to mount heatersup to 5 W/in.² (0.78W/cm²). Your localDow Corning or GE RTV representativecan recommend different adhesives based on your application.

Factory VulcanizedChromalox can factory vulcanize yoursilicone rubber heating element directlyonto your part. This provides the great-est bond strength and best heat trans-fer capability of all mounting methods.Chromalox can either vulcanize to your

part or manufacture the part in-house;providing you with unsurpassed value-added work. In some cases, special tooling may be required.

Eyelets, Mounting Bars and HooksThese can be attached or bonded intothe heaters to allow for easy lacing ofthe heaters to the work. Mounting barsprovide the greatest strength and lon-gevity because they are thin strips of aluminum vulcanized between layers of rubber insulation.

Silicone or Nylon StrapsUsed with D-rings to provide a simplemethod of mounting, the straps are slipped through and cinched tight. The straps are vulcanized directly to the heaters to provide durability and strength for repeated attachments.

Pressure-Sensitive Adhesive (PSA) Field-Applied Room-Temperature Vulcanizing Adhesives (RTA)

Factory Vulcanizing

Eyelets, Mounting Bars and Hooks

Straps

7

Velcro* ClosuresUsed for lightweight and low-tem- perature heater applications, and on insulation blankets, Velcro hook-and-loop material is generally sewn onto silicone rubber straps to provide greater strength and durability.

Springs or Spring ClaspsThese are used for quick on/off attach- ment of the heaters. Mounting bars or plates are vulcanized into the heaters for greater strength and serviceability. Note: The exact circumference of the part to be heated is required when using springs or spring clasps.

Temperature ControlsChromalox provides a wide range of thermostats, thermocouples, RTDs, thermal fuses, and thermistors for

controlling your heated system. All can be mounted to the heater or be free-standing, sensing heater surface, air, or system surface temperature. Sensors can be used in conjunction with one another to provide controlling temperature and overtemperature protection.

Preset ThermostatsBi-metal thermostats can be molded into the heating elements for part sur- face, heater surface, or air temper-ature sensing. The thermostats are mounted in-line with the elements or have their own termination based on the amperage requirements of the heaters.

Thermostats are available in 10°F (6°C) increments up to 300°F (149°C) 125V/15A, 250V/10A Chromalox

Preset Thermostats

Adjustable Thermostat

Thermocouples, RTDs, Thermal Fuses, or Thermistors

maintains a stock of various temper- ature settings. Check on availability prior to ordering. Non-stock settings may require additional lead-time.

Adjustable ThermostatsAvailable in the ranges of 70° to 140°F (21° to 60°C), 70° to 190°F (21° to 88°C), or 70° to 425°F (21° to 218°C), they are mounted to the heaters and covered with a durable rubber box. Adjustments can be made with either a factory provided knob or with a screw driver. Other temperature ranges available on request. Thermostats are rated for 1,600 W maximum.

Thermocouples, RTDs, Thermal Fuses, or ThermistorsThese can also be molded into the heating elements to sense either heater temperature or surface temperature of your part.

Termination StylesChromalox offers many types of leads and terminal connections for your flexible heaters. Internal connections to the elements can be made at any point on the surface of the heater or project from any edge. Internal or mounted strain reliefs are used in all constructions to ensure durability of your flexible product.

Silicone-, Teflon*-, or Neoprene-Insulated Stranded LeadsStranded leads insulated with silicone, Teflon, or neoprene can be encapsulated in the heaters for direct power connec- tion. Silicone-rubber-insulated leads for temperatures to 390°F (199°C) are standard for silicone-rubber heaters. Lead wires can come with a choice of terminals attached.

*Velcro is the registered trademark of Velcro Industries B.V. Teflon is the registered trademark of E. I. Du Pont De Nemours and Company.

Lead Wires

8

Silicone, Fiberglass Sleeving, or Armor BraidingTo provide greater abrasion resistance, silicone, fiberglass sleeving, or armor braiding can be molded over the lead-wires to provide greater abrasion resistance.

Power CordsPower cords either with or without plugs can be vulcanized into SL-N silicone-rubber-insulated flexible heaters. Internal and external strain reliefs are used to ensure cord attachment strength and

durability of the element. Ground wires, if used, can be mounted to internal grounding screens, mounting plates, or foil backing. All “flying” ground wires are a minimum of 6 in. (152 mm) in length and may have a ring terminal attached for easy field grounding to your part.

GroundingTo meet evolving NEC requirements, Military standards, or your application needs, grounding can be easily man- aged with Chromalox flexible heaters. Internal grounding screens, surface-

piercing mounting plates, or foil backing can be incorporated in the heater con- struction to ensure system grounding.

InsulationInsulation of the heater element can be achieved by factory bonding sili-cone or foam rubber to the element or by encasing fiberglass insulation as the outer layer of the heating ele-ment. Encasing fiberglass is not rec-ommended for outdoor application since “breathing holes” are used that may allow for moisture absorption.

Silicone Sleeving Armor Braid Sleeving

Power Cord

Foil Backing

Foil

Rubber Insulation

Heating Element

Encased Insulation

Top Layer of Rubber Insulation

Fiberglass Insulation

Heater

9

Features of SL-B Silicone-Rub-ber-Insulated Enclosure and Air Heaters

• 25, 50, 100, and 200 watts

• 120 volts standard; 600 volts available with special thermo-stats (consult Chromalox)

• Vulcanized to mounting plate for easy installation

• 10-in. (254-mm) silicone-insulated leads standard

• Air-temperature-sensing thermo- stats (40°F/4°C closed, 55°F/13°C open) ensure heater operation in condensation-forming and other air-heating application conditions

• Custom design available (consult Chromalox)

Chromalox SL-B silicone-rubber-insulated enclosure and air heaters are used for freeze protection and condensate protection in electrical enclosures. They are also installed in equipment to keep mechanical components functioning in applications such as ATM machines and automatic doors. Shipment can be made within 24 hours from receipt of order.

Freeze and Condensate Protection in Enclosed Spaces

The SL-B enclosure heaters are factory vulcanized to an aluminum mounting plate that allows for easy installation. The mounting surface is perpendicular to the heater and has two mounting holes. If using the heater with the integral thermostat, vertical mounting with the sensor towards the base of the enclosure is recommended.

Chromalox SL-B Silicone-Rubber-Insulated Enclosure and Air Heaters

Example installation of a Chromalox SL-B silicone-rubber-insulted enclosure heater.

Heater

Plate

Mounting Surface Hole Position

10

Determining Minimum Recommended Wattage for SL-B Enclosure and Air Heater Applications°F (°C) Above

Ambient

Total Surface Area, ft² (m²)

2 (0.2) 3 (0.3) 4 (0.8) 5 (0.5) 6 (0.6) 7.5 (0.7) 9 (0.9) 10 (1.0) 15 (1.4) 20 (1.9) 25 (2.3) 30 (2.8) 40 (3.7) 50 (4.7)

Uninsulated Enclosures

20 (11) 30 (2.8) 40 (3.7) 55 (5.1) 70 (6.5) 80 (7.4) 100 (9.3) 120 (11.1) 135 (12.5) 205 (19.1) 270 (25.1) 335 (31.1) 405 (37.6) 540 (50.2) 670 (62.3)

40 (22) 55 (5.1) 80 (7.4) 110 (10.2) 135 (12.5) 160 (14.9) 200 (18.6) 245 (22.8) 270 (25.1) 405 (37.6) 540 (50.2) 670 (62.3) 805 (74.8) 1,075 (99.9) 1,340 (124.5)

60 (33) 90 (8.4) 120 (11.1) 160 (14.9) 205 (19.1) 245 (22.8) 300 (27.9) 365 (33.9) 405 (37.6) 605 (56.2) 805 (74.8) 1,005 (93.4) 1,210 (186.7) 1,610 (149.6) 2,010 (186.7)

80 (44) 110 (10.2) 160 (14.9) 215 (20.0) 270 (25.1) 325 (30.2) 400 (37.2) 485 (45.1) 540 (50.2) 805 (74.8) 1,075 (99.9) 1,340 (124.5) 1,610 (149.6) 2,145 (199.3) 2,680 (249.0)

100 (55) 135 (12.5) 200 (18.6) 270 (25.1) 335 (31.1) 405 (37.6) 500 (46.5) 605 (56.2) 670 (62.3) 1,005 (93.4) 1,340 (124.5) 1,675 (155.6) 2,010 (186.7) 2,680 (249.0) 3,350 (311.2)

120 (66) 165 (15.3) 240 (22.3) 320 (29.7) 405 (37.6) 485 (45.1) 600 (55.7) 725 (67.4) 805 (74.8) 1,210 (112.4) 1,610 (149.6) 2,010 (186.7) 2,415 (224.4) 3,220 (299.1) 4,020 (373.5)

140 (77) 190 (17.7) 280 (26.0) 375 (34.8) 470 (43.7) 565 (52.5) 700 (65.0) 845 (78.5) 940 (87.3) 1,410 (131.0) 1,880 (174.7) 2,345 (217.9) 2,815 (261.5) 3,775 (350.7) 4,690 (435.7)

Insulated Enclosures

20 (11) 10 (0.9) 10 (0.9) 15 (1.4) 20 (1.9) 20 (1.9) 25 (2.3) 30 (2.8) 35 (3.3) 50 (4.7) 65 (6.0) 80 (7.4) 100 (9.3) 130 (12.1) 160 (14.9)

40 (22) 15 (1.4) 20 (1.9) 30 (2.8) 35 (3.3) 40 (3.7) 50 (4.7) 60 (5.6) 65 (6.0) 100 (9.3) 130 (12.1) 160 (14.9) 195 (18.1) 260 (24.2) 320 (29.7)

60 (33) 20 (1.9) 30 (2.8) 55 (5.1) 50 (4.7) 60 (5.6) 75 (7.0) 90 (8.4) 100 (9.3) 145 (13.5) 195 (18.1) 240 (22.3) 290 (26.9) 385 (35.8) 480 (44.6)

80 (44) 30 (2.8) 40 (3.7) 55 (5.1) 65 (6.0) 80 (7.4) 100 (9.3) 115 (10.7) 130 (12.1) 195 (18.1) 260 (24.2) 320 (29.7) 320 (29.7) 515 (47.9) 640 (59.5)

100 (55) 35 (3.3) 50 (4.7) 65 (6.0) 80 (7.4) 100 (9.3) 125 (11.6) 145 (13.5) 160 (14.9) 240 (22.3) 320 (29.7) 400 (37.2) 400 (37.2) 640 (59.5) 800 (74.3)

120 (66) 40 (3.7) 60 (5.6) 80 (7.4) 100 (9.3) 115 (10.7) 150 (13.9) 175 (16.3) 195 (18.1) 290 (26.4) 385 (35.8) 480 (44.6) 480 (44.6) 770 (71.5) 960 (89.2)

140 (77) 45 (4.2) 70 (6.5) 90 (8.4) 115 (10.7) 135 (12.5) 175 (16.3) 205 (19.1) 225 (20.9) 340 (31.6) 450 (41.8) 560 (52.0) 560 (52.0) 900 (83.6) 1,120 (104.1)

SL-B Heater Specification and Ordering Information

Watts VoltsDimensions

Model No. PCNHeated Surface in. (mm)

Plate Size in. (mm)

Mounting Surface in. (mm)

Enclosure with In-Line Thermostat, 40°F (4°C)

2550100200

120120120120

2 x 5 (50 x 127)2 x 5 (50 x 127)2 x 10 (50 x 254)4 x 10 (102 x 254)

2.5 x 5 (1.25 x 127)2.5 x 5 (1.25 x 127)2.5 x 10 (1.25 x 254)4.5 x 10 (114 x 254)

0.5 x 5 (1.2.5 x 127)0.5 x 5 (1.25 x 127)0.5 x 10 (1.25 x 254)0.5 x 10 (1.25 x 254)

SL-B-2-5-55PSL-B-2-5-55PSL-B-2-10-55PSL-B-4-10-55P

122622122606122585123297

Enclosure without Thermostat

2550100200

120120120120

2 x 5 (50 x 127)2 x 5 (50 x 127)2 x 10 (50 x 254)4 x 10 (102 x 254)

2.5 x 5 (1.25 x 127)2.5 x 5 (1.25 x 127)2.5 x 10 (1.25 x 254)4.5 x 10 (114 x 254)

0.5 x 5 (1.2.5 x 127)0.5 x 5 (1.25 x 127)0.5 x 10 (1.25 x 254)0.5 x 10 (1.25 x 254)

SL-B-2-5-OSL-B-2-5-OSL-B-2-10-OSL-B-4-10-O

122164122593122577123300

Field Installable Thermostat Kit, 40°F (4°C)

— — — — — T-N-55P-Kit 122657

11

Chromalox SLDH silicone-rubber-insulated drum heaters are designed to provide low-watt-density electrical resistance heat to the contents of drums for freeze protection, melting of low- melting-point solids, viscosity control of fluids, and temperature maintenance of materials while in use.

The heaters are constructed of chem- ical- and moisture-resistant silicone-rubber-reinforced fiberglass cloth laminated around resistance wire with a wire-mesh screen for ground-fault protection and a heavy-duty spring assembly for attachment to the drum. The construction of the SLDH heater provides flexibility without fear of pre- mature failure. An optional built-in

adjustable thermostat is available to control heater temperature from 70° to 425°F (21° to 218°C) for steel drums or 70° to 140°F (21° to 60°C) for plastic drums.

The SLDH drum heater heats the contents of the drum by convection. Heating occurs from where the heater is installed to the top of the drum. If the entire drum is to be heated, the SLDH heater should be installed as near to the bottom of the drum as pos- sible. If only part of the material is to be heated, the drum heater should be installed around the center or top portion of the drum. This enables faster heat-up and saves energy. Take care to ensure that the material

level in the drum never falls below the location of the heater. The line graph on the next page illustrates the com-parative efficiencies of one, two, and three SLDH heaters on a 55-gal drum.

Stock sizes are available to accom-modate standard-size 5-, 15-, 30-, and 55-gal drums. Girth extension straps are available to use SLDH drum heaters on non-standard-size drums or to adapt SLDH drum heaters to larger drums or other cylindrical containers similar in size. The girth extension straps permit extending the length of the heater by ½ in. (12.7 mm) to 10 in. (254 mm) in circumference.

Features of SLDH Silicone-Rubber- Insulated Flexible Heaters• For 5-, 15-, 30-, and 55-gal metal

and non-metal drums

• Rugged and flexible

• Chemical and moisture resistant

• 120-volt models supplied with 6-ft (1.8-m) power cord and three-prong plug; 240 volt models do not include plug

• Optional built-in adjustable thermostats available

• Easy to store

• Ship complete, ready to install and use on arrival

Low-Watt-Density Electrical Resistance Heat for a Variety of Applications

Chromalox SLDH Silicone-Rubber-Insulated Drum Heaters

12

SLDH Heater Specification and Ordering Information

Drum Size gal (l) Drum Type Watts Volts Adjustable Thermostat

°F (°C)Heater Width

in. (mm)Heater Weight

lb (kg) Model No. PCN

5 (20) Metal 550 120 70 - 425 (21 - 218) 4 (102) 1.4 (0.64) SLDH-05-A-6CPGM-1-55 123123

15 (57) Metal 500 120 70 - 425 (21 - 218) 3 (76) 1.412 (0.64) SLDH-15-A-6CPGM-1-50 123131

15 (57) Metal 500 240 70 - 425 (21 - 218) 3 (76) 1.412 (0.64) SLDH-15-1-6CGM-2-50 123211

15 (57) Metal 700 240 70 - 425 (21 - 218) 3 (76) 1.6 (0.73) SLDH-15-A-6CPGM-1-70 123140

30 (115) Metal 750 120 70 - 425 (21 - 218) 3 (76) 1.7 (0.77) SLDH 30-A-6CPGM-1-75 123158

30 (115) Metal 750 240 70 - 425 (21 - 218) 3 (76) 1.7 (0.77) SLDH-30-A-6CGM-2-75 123220

30 (115) Metal 1,000 120 70 - 425 (21 - 218) 3 (76) 2 (0.91) SLDH-30-A-6CPGM-1-100 123166

55 (210) Metal 1,000 120 70 - 425 (21 - 218) 3 (76) 1.9 (0.86) SLDH-55-A-6CPGM-1-100 123174

55 (210) Metal 1,000 240 70 - 425 (21 - 218) 3 (76) 1.9 (0.86) SLDH-55-A-6CGM-2-100 123238

55 (210) Metal 1,200 120 70 - 425 (21 - 218) 4 (102) 2.3 (1.04) SLDH-55-A-6CPGM-1-120 123182

55 (210) Metal 1,200 240 70 - 425 (21 - 218) 4 (102) 2.3 (1.04) SLDH-55-A-6CGM-2-120 123246

5 (20) Plastic 300 120 70 - 140 (21 - 60) 9.5 (241) 3.4 (1.54) SLDHP-05-A-6CPGM-1-30 123190

55 (210) Plastic 750 120 70 - 140 (21 - 60) 9.5 (241) 5.1 (2.31) SLDHP-55-A-6CPGM-1-75 123203

0 2 4 6 8 10 12 14 16 18 20 22 24

Hours

Cont

ent T

empe

ratu

re, °

F (°

C)

210 (99)

200 (93)

190 (88)

180 (82)

170 (77)

160 (71)

150 (66)

140 (60)

130 (54)

120 (49)

110 (43)

100 (38)

90 (32)

80 (27)

70 (21)

0 (0)

1 DRUM HEATER

2 DRUM HEATERS

3 DRUM HEATERS

1,000-Watt, 55-Gallon ( 210 l ) Drum Heater PerformanceCovered Drum Filled with Water at Ambient Temperature (70°F /21°C)

Drum Size/Capacity Cross Reference

Drum Size gal

Diameter in.

Diameter mm

Drum Capacity l

55 22 ½ (nom.) 570 210

30 19 ½ (nom.) 470 115

15 13 ½ (nom.) 343 57

5 11 ½ (nom.) 290 20

Girth extension straps.

13

Chromalox PHD and PHDT Heavy-Duty Fiberglass Woven Drum Heaters

Chromalox PHD heavy-duty fiberglass woven drum heaters are constructed of fiberglass-insulated resistance wire woven into a mesh blanket and then encased in layers of silicone rubber. Like Chromalox SLDH silicone-rubber- insulated drum heaters, PHD fiberglass

woven drum heaters provide low-watt- density electrical resistance heat for freeze protection, melting of low-melting-point solids, viscosity control of fluids, and temperature maintenance of materials while in use. But because of their construction, PHD woven drum heaters are much stronger and more durable than silicone-rubber-insulated drum heaters, making them better suited for harsh working environments.

Heating occurs by convection from the point where the heater is installed to the top of the drum. If the entire drum is to be heated, the PHD heater should

be installed as near to the bottom of the drum as possible. If only part of the material is to be heated, the drum heater should be installed around the center or top portion of the drum. This enables faster heat-up and saves energy. Care must be given to ensure that the mater- ial level in the drum never falls below the location of the heater.

PHD heavy-duty fiberglass woven drum heaters are available with a built-in thermostat to control heater temper- ature from 50° to 425°F (10° to 218°C). These models are designated PHDT.

Features of PHD and PHDT Heavy-Duty Fiberglass Woven Heaters

• For 5-, 15-, 30-, and 55-gal metal drums

• Strong, durable, ideal for harsh working environments

• Chemical and moisture resistant

• 120-volt models supplied with 6-ft (1.8-m) power cord and three-prong plug; 240 volt models do not include plug

• PHDT models include adjustable thermostats

• Ground fault protection standard

• Easy to store

• Ship complete, ready to install and use on arrival

Durability and Strength for Harsh Working Environments

Fiberglass woven construction makes Chromalox PHD and PHDT drum heaters stronger and more durable for harsh-working-environment applications

14

PHD and PHDT Heater Specification and Ordering Information Drum

Watts Volts

PHD PHDT*

Size gal (l) Type Model No. PCN Model No. PCN

5 (20) Metal 1,200 120 PHD-55-1-12 123027 PHDT-55-1-12 123107

15 (57) Metal 1,200 240 PHD-55-2-12 123035 PHDT-55-2-12 123115

15 (57) Metal 1,000 120 PHD-30-1-10 122980 PHDT-30-1-10 123060

15 (57) Metal 1,000 240 PHD-30-2-10 122999 PHDT-30-2-10 123078

30 (115) Metal 700 120 PHD-15-1-7 122964 PHDT-15-1-7 123043

30 (115) Metal 700 240 PHD-15-2-7 122972 PHDT-15-2-7 123051

30 (115) Metal 550 120 PHD-5-1-5 123000 PHDT-5-1-5 123086

55 (210) Metal 550 240 PHD-5-2-5 123019 PHDT-5-2-5 123094

Girth Extension Strap PDES-10 290132 PDES-10 290132

*PHDT includes built-in 50° to 425°F (10° to 218°C) adjustable thermostat.

Drum Size gal.

Diameter in.

Diameter mm

Drum Capacity l

55 22 ½ (nom.) 570 210

30 19 ½ (nom.) 470 115

15 13 ½ (nom.) 343 57

5 11 ½ (nom.) 290 20

Drum Size/Capacity Cross Reference

Girth extension straps.

There are PHD and PHDT models for all standard-size 5-, 15-, 30-, and 55-gal drums.

All PHD and PHDT fiberglass woven drum heaters feature a grounded heating element for electrical pro-tection. They come with a spring clasp for snug attachment to the circum-ference of the drum.

Girth extension straps are available for using PHD and PHDT drum heaters on non-standard-size drums or to adapt the drum heaters to larger drums or other

cylindrical containers similar in size. The girth extension straps permit extending the length of the heater by ½ to 10 in. (12.7 to 254 mm) in circumference.

15

IBG Insulation Blanket Specifi cation and Ordering Information

Drum Sizegal ( l )

Weightlb (kg) Model No. PCN

5 (20) 2 (1) IBG-5 298070

15 (57) 2 (1) IBG-15 299225

30 (115) 3 (1.5) IBG-30 299233

55 (210) 3 (1.5) IBG-55 298089

Increase the Heating Effi ciency, Reduce the Operating Costs of Your Drum Heaters

Chromalox IBG Flexible Thermal Drum Insulation Blanket

Features of IBG Flexible Thermal Drum Insulation Blankets

• For 5-, 15-, 30-, and 55-gal drums

• Flexible, easy to mount

• 450°F (230°C) maximum exposure temperature

• Chemical and moisture resistant

Chromalox IBG drum insulation blankets are bulk fi berglass insulation covered with silicone glass cloth, designed for use with Chromalox drum heaters. These energy-saving blankets increase heating effi ciency and reduce operating costs. They cover only the drum heater and provide thermal protection from the heater’s back, heated surface.

Full-coverage thermal insulation blan-kets are available and made-to-orderto your specifi cations. Contact yourChromalox representative for assistance.

IBG insulation blankets may be easily installed with Velcro* fasteners. The blankets are moisture resistant but not waterproof.

*Velcro is the registered trademark of Velcro Industries B.V.

Copyright © 2013, Chromalox, Inc. All rights reserved.PL301 06/13

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